2023年高考物理一轮复习核心技知识点提升1.3匀变速直线运动图像和追及相遇问题

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᦮1V&஺OÚ°QÇ[ÛOᨬÜ⌱⚗D┯ä.1(î⌱)ïðᜩòQ+☢óôõᙠöញᑷQḄᑷù£ú.᝞Yᡠûüᕒûüg0þõᙠ7ÿ☢ញᑷḄv~tᕒḄ1s.ᑡḄ()v/(m-s_|)30☢2()!ஹ☢10012345//SA.!f=0ᑮ#$ᙠ&☢Ḅ'ᙳ)*ᜧ,ᙠ☢Ḅ'ᙳ)*B.!r=isᑮ#$ᙠ&☢Ḅ'ᙳ)*ᜧ,ᙠ☢Ḅ'ᙳ)*C.!r=oᑮ#$ᙠ&☢Ḅ-./0ᙠ☢Ḅ-./115mD.!r=1sᑮ#$ᙠ&☢Ḅ2)*ᙠ☢Ḅ2)*Ḅ0.753ூ5ᫀ௃CDூ8᪆௃!f=0ᑮ#$ᙠ&☢Ḅ:;xi=30xlm+"=@m/s=18m/s$ᙠ☢Ḅ:;ᐝ2=30x1m+F-m=75m'ᙳ-75)*ᔾ=7m/s=18.75m/s,X]—X2=15m,ᦑA┯ECF30!/=Isᑮ#$ᙠ&☢Ḅ'ᙳ)*>'=gm/s=15m/s,$ᙠ☢Ḅ'ᙳ)*

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,$ᙠ☢Ḅ21)*ᜧK஺2=Om/s2=10m/s2,ᑣ!f=lsᑮ#$ᙠ&☢Ḅ2)*ᙠ☢Ḅ2)*Ḅ0.753ᦑD.ᙠ'RḄSTᨵᵬஹWXY$Z[\]Ḅ:^-᝞ᡠb஺ᙠ0(6sᑁ᪷efgᑨiḄ246”,A.ᵬஹW\]ḄjᔣlmB.ᵬḄ)*ᙠ5sᜧ,WḄ)*C.ᵬḄ)*noK,WḄ)*D.ᵬஹWpᙠ2(4sqḄrsl.ᨬuூ5ᫀ௃Cூ8᪆௃v:^-Ḅw᳛⊤b)*fzᵬஹW\]ḄjᔣlᦑA┯E;ᵫ⚪fzᵬ~Ḅw᳛K,W~w᳛ḄᑣᵬḄ)*K,WḄ)*ᦑB┯E,C;ᵬஹWᙠ2(4sqᐜ⌲☠u/,⊤bl⍗◞ᑁᙠl.ᨬuḄsᦑD┯E஺ᵨᦪᑖ᪆,\]fᵫ\]SXᱥᳮ¡Ḅᦪᐵ£,ᩭᑖ᪆Ḅw᳛ஹ¥.ஹ☢¦Ḅ§¨.©⚪2.ªᱥ«ᵫ☟®nᙠ¯°Ḅ±'☢ᑁ²R~\]ᐸ2)*«µt¶ᓄḄa-t᝞ᡠb.¸⌱ᱥ«®n\]Ḅjᔣjᔣº»ᑡ¼Ḅ½¾¿ÀÁA.ᙠ0(2sḄᑁᱥ«ᐜÂᒴ)R~\]ÂᒴÄ)\]B.ᙠ2sᱥ«Ḅ:;ᨬᜧC.ᙠ2(3sḄᑁᱥ«)*Ḅ¶ᓄ¡ª1m/s

15D.ᙠ஺Å4sḄᑁᱥ«Ḅ:;Æூ5ᫀ௃Cூ8᪆௃0~1s,2)*¶ᱥ«Âᒴ2)\]1Å2s2)*ᦪÄKᱥ«Â2)*ÄKḄ¶2)\]A┯EJ2s2)*0,)*ᨬᜧB┯EJa-f¼~ÇÈÉᡠÊḄ☢¦⊤b)*Ḅ¶ᓄ¡2Å3sḄᑁ)*¶ᓄ¡Ëv=Fxlx—2
m/s=-1m/s,CF0Å4sᑁᱥ«Ḅ)*¶ᓄ¡0,ᓽᱥ«ᙠ4s#\]:;0,D┯E.]GᙠᑷÍμ:;ÏḄ0:ÇfqḄᐵ£᝞ᡠbᑣᑡḄ½¾2ORѽ¾Ò•-----4Ñ04ߟi/sA.]GḄÕ)*20m/sB.ᑷÍÎ]GḄ2)*ᜧK2.5m/s?C.ᑷÍÎᢝ×Ḅ8sD.4sᑁᑷ:;60mூ5ᫀ௃Aூ8᪆௃Xᵫ⚪fØ7=—2.5/+20m/s
,᪷eᒴ¶)R~\]:;ÇḄᐵ£x=u½¾f+¾ÙØ0fØvo=2Om/s,a=-5m/s2,ᓽÚᑷ]GḄ)*ᜧK20m/s,ᑷÍÎ]GḄ2)*ᜧK5m/s2,ᦑAB┯EJᑷÍÎᢝ×Ḅt=-~s=4s,ᦑC┯EF᦮ᑷÍÎ]GÜÍḄ:;Ý=Þ=14ma—5ZZ=40m,ᦑD┯E.ß᝞ᡠbrᱥ«ÂR~\]ḄàªX½ᐸ¼V)*X:^ᙶ᪗¾,ᑡᐵ,ᱥ«!x=0ᜐ\]äX=xoᜐḄÍÎᑖ᪆ᐸ¼Ḅ½¾Ro---------MA.ᱥ«Âᒴ2)R~\]B.ᱥ«Ḅ2)*ᜧKå

1613c.æᱥ«Ḅ)*ᜧK2ᓽ:;ᜧK஺D.æᱥ«Ḅ:;ᜧK|xo)*ᜧKT஺ூ5ᫀ௃Cூ8᪆௃ᵫᒴ¶)R~\])*Ç:;Ḅᐵ£v2—W)2=2OXfØv2=2tu-+vo2,ᵫ⚪fzᱥ«Ḅ2)*ឤð¶ᵫ,ᱥ«Ḅ)*ÄKᦑᱥ«ÂᒴÄ)R~\]⌱⚗A┯EJᵫ=2g+zv2ªóḄw᳛ô,2”ᵫ⚪fØ2a=ª>"ᑣØᱥ«Ḅ2)*a=Xo—y-,2)*ᜧK$⌱⚗B┯EJæᱥ«)*ᜧK;᝞7=8()2,fØx=OZA()ZX()Z44⌱⚗Cᱥᜧ5a=()2,ᜧ!ᜐ⌱⚗D┯%.'()Ḅ+,-ᓄ1./0'(-ᣚ23⚪Ḅ5678:_;<…-*᪀E—»Kᵨ—►ᑨQ>?@AFGHKMNὪ2.⌕Z[Kᵨ/᪆]X᣸◀]`ὅbᔠRS⌱T⚪'(2⚪UḄ/⚪V᳛X.d⚪3.5fgᵫ☟jklmnoFpḄv-fᐵt'(᝞'ᡠwᑣfgḄ%5ᐵt'(ᜧz⊤w⌱⚗'|Ḅ(ூ~ᫀ௃Bூ/᪆௃᪷x-f'(|'oḄ᳛⊤wfgḄx—fᐵt'(ᜧz⊤wB'.5ᱥᵫ☟jklnoFpᐸ)ᓄḄ᝞'ᡠw.ᱥ

17klFpḄᔣᔣᑣᑡᐵᱥFpḄ5'(Ḅூ/᪆௃᪷)ᓄḄ'(01sᑁᒴnoFpᔣ⌱⚗D┯%1sḄv=lm/s,l2sᑁ?ᔣᒴFp¡112s0,⌱⚗B┯%23s,ᔣ¢0,ᱥmᔣḄᒴnoFpᓽ¤2skl¥¦§☢ḄFp⌱⚗Cp©8|4ஹVஹX)ᓄḄ'(᝞'ᡠw஺¬ᱥᙠ®0¯¢°ᑣ⊤wᱥᓫ5ᔣFpḄ'(ூ/᪆௃⌱⚗Aᡠ²³ḄFpᙠ0-2sᑁᐜµᜧ¶ᱥFpḄᔣ·¸ᦋ,ᦑA┯%;⌱⚗Bᡠ²³ḄFpᙠ02sᑁᱥᔣᔣFpᙠ24sᑁᱥᔣᔣFpᱥFpᔣ·¸ᦋᦑB┯%;⌱⚗Cᡠ²³ḄFpᙠ01sᑁ¼ᱥmᒴnoFp,1~2sᑁᔣᦋᜧ¼ᱥᔣᔣmᒴnoFp,2s°,ᱥᙠ5½ᕜ¿ᑁḄᔣ¼ᦑC;⌱⚗Dᡠ²³ḄFpᙠ01sᑁᔣᔣmᒴnoFpÀÁ2sᑁᔣᦋᜧ¼ᔣᔣmᒴnoFp,2s°,23sᑁᔣᔣmᒴnoFpᱥFpḄᔣ·¸ᦋᦑD┯%஺

18জ@@QGÂÃÄÅÆÇ(1)ὅÄᜧὅÆÇ'(ÈÉËজf=fo̧Í☢ᱥΧ☢ᱥ)ÏеᜧÊᒴÄᒴঝf=/o`ᱥ+ÏᨬÒÓ+Ar(xo0t`ᱥ¢lÏÐ)V(3)r=roÌÍÍ☢ᱥΧ☢ᱥ)ÏÐᒴÄᒴটÕÄÖ×ØÕ+⍗5Ú0G,tᒴÄᒴᓽtᱯÜR⏨Þ¬ßÄàḄᱥmᒴnoFp5á⌕Z[ᑨQßÄÖ§ᱥᔲãäåjFp.(2)ᜧὅÄὅÆÇ'(ÈÉ\VklÄà`ᱥ)ÏÐxo,æÍ`ᱥ)ḄÏᒴÄᒴ1iT>7Ðᙠ`ᱥ+çᓽf=fo¯Þ1111110t\io21জ¬é=ᑣាÕÄÖ`ᱥØÕ+⍗5Úë^rìíî+ïḄðñᩩóvᒴÄᒴঝ¬AAxo&ᑣ+⍗`Úöfl¯Ax=xo&`ᱥᒴÄᒴ5Ú+⍗ᑣt¯`ᱥ÷Ú+⍗প5?=Ê20hii/u2-n)d⚪4.5ùúûᙠᓝýþÿ᎛஺=3m/s2Ḅាᙠ6m/sḄᒴ.ᑣ#$%&ᙠ'()*+,-./01ᨬ345/Ḅ167,84ூ:ᫀ௃2s6niூ=᪆௃

19=@Aᑖ᪆@CDEḄ001ᨬ3F5+Ḅ.G7,/.ḄHI6GAx,JIᨵv=atvᡠ,=Z=2s^x=vt-^at2=6m.=@MA᩽O@CDFᙠ'()*+.//01ᨬ3ᑣzXx=vr-yzr23QᐭSTᦪVWAi=6r—ᵫMYZᦪ[᩽OḄᩩ]TD=2sAvᨵᨬᜧO6mᡠr=2s/01ᨬ3G&r=6m.=@_A`a@CDbḄv-r`a᝞`ᡠdᵫ`efgᙠ0⍗*ij/0/01ᨬ35Ḅ16G▢l_ᓭnḄ☢p=6m/sᡠᨵt\=^=3s=2s,vi/i6x2Ar=Tm=6m.Aq=4m/sḄᔣstᒴuvw&xy*z01xo=7mᜐஹv=10m/sḄ}ᔣw&ḄB~ᒴᑷuᑮ☟ᢝ&ᐸᑷḄBᜧ஺=2m/s?.ᑷ.[D1
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206ᨬ3ᓽV=VB~Clt=VArWZ=3s5AḄ¡¢4=¤"=12mBḄ¡ᱥ=uM—஻=21mᦑᨬ316AXmax=Xb+xo—X4=161T1.(2)8uᑮ☟+ᔊḄ.Zi=~=5sw&Ḅ¡x/=ᡈ=25mAᙠi.ᑁw&Ḅ¡'=Ái=20m501Ax=x+x()ᜐ'=12mArA◤Åw&Ḅ.h=—=3sVAᦑA'(Bᡠᵨ.t-i=t\+t2=Ss.G@@ᙠuvÇ#È(54km/hḄᒴËᯠxyᙠᐸ~*z14mᜐᨵ5m/sḄ}ᔣᒴ.+0.4sḄÍÎ.ÏÐᑷᑣD(1)GHÑÒ0ÓḄᜧÔ8G,84(2)ÕᑷḄᜧÖᨵ4m/s2,ᙠᑷḄ}ØḄᒴᑣḄÔ8G,ᜧÙÚÛ/0Ó4ூ:ᫀ௃প5m/s2(2)1m/s2ூ=᪆௃(1)FḄᜧGa,Ýv=54km/h=15m/s,Ý16J=14mᙠ+ÍÎ.0.4sE01“v)fo=10mftᑷḄ¡GDXt!=VntḄ¡GDxi=vᎷFÚ'(5ᨵDxa=xn+d'QᐭᦪV᦮ᳮWD2

21⌕Û0Óᓽ5zÔ,Öᨵé=,ᑣDA=102-20a<0,=W:a>5m/s2.ḄᜧÔ8G5m/s2.(2)FG"}ᳮeWDx-xr+yr2᦮ᳮWD(“'+2)--10/+10=0⌕Û0Óᓽ5zÔ,Öᨵé=,ᑣD"=102—20d-80W0=WD1m/s2.ḄᜧÔ8GIm/s2.`a@ᙠ'ê0⍗ë⚪íḄÎᵨ1.x-f`aஹv-r`aíḄ'ê0⍗ë⚪D(1)ᑭᵨ`aíï᳛ஹ☢pஹñòḄóôõØឋᑖ᪆ᡈØ÷ø.(2)ᨵùw&`aúûᡂᱥýḄþ▭
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*⌱⚗BnoDᵬPᙠ10sᑁḄRᙳvz(===-0.6m/s,⌱⚗C┯Da>*ᑣP⍗*aḄ᳛⊤_vz*⍗[ᵬஹLvzQ*⌱⚗D┯.(⌱)ᵬஹLPᙠR5SUQᔣIV*ᐸV-t᝞ᡠ_.Pᙠf=3s[᣸IV*¢1]()0112£1sA.ᙠf=ls[*ᵬPᙠLPwB.ᙠf=0[*ᵬPᙠLP¤7.5mC.P¥)᣸IVḄ[¦bt=2sD.ᵬஹLP᣸IVḄY§¨\©SᔣḄª«;40mூᫀ௃BDூ᪆௃᪷()/*ᵬஹLP©nᔣ
./=3s[*ᵬஹLP᣸IV*[uᵬ=30m/s,uo=25m/s,ᵫv-ta[\dᡠ®“☢¯”e±YZ*0}3sᑁᵬPYZx•=Dx3x30m=45m,LPYZxL=²3³(10+25)m=52.5m.ᦑf=0[*ᵬஹLPª\x\=xc~xr=1.Sm,ᓽᵬPᙠLP¤7.5m,⌱⚗BnoD0}1sᑁ*x/=DxlxlOm=5m,xc,=^xlx(10+15)m=12.5m,\xz=xd-x®,=7.5m=Axi,lµᙠf=Is[ᵬஹLP¶)᣸IV*⌱⚗AஹC┯ᵬஹLP᣸IVḄY§¨\Ḅª«;x=xᵬ)xᵬ'=45m—5m=40m,⌱⚗Dno.Ꮇ¸¹vSUᵬஹLPᙠQ)P⍝UQᔣIV.ᵬPᙠ¤*LPᙠw,vzᙳ;W=30m/s.ᵬஹLªX0=100m,1=0[¦ᵬP¼⍗½ញw*ᵬஹLPḄ|vz¿[\ÀᓄᑖÁ᝞ᵬஹLᡠ_.Â
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23C.r=6s[Pª«ᨬÄ*ᨬĪ«;10mD.Pᙠ0}9sᑁÅÆூᫀ௃Cூ᪆௃ᵫ⚪ÇÈ'PḄv-r᝞ᡠ_*ᵫ*f=6s[Pv*[ª«ᨬÄ*▢Êhᑖ☢¯;0}6sᑁPYZ¨Ë*ᓽAr=xᓃ-x▼=|JX30X3+!X30X(6—3)]m=90m

24A.02sᑁᵬஹ'ᱥ)*+Ḅ,-ᐜ/ᜧ"#$B.03sᑁᵬஹ'ᱥ)12ᔣ3C.2~4sᑁᵬஹḄ45ᜧ$678mD.06sᑁᵬஹ'ᱥ),89:Ḅᨬᜧ,-ᙳ74mூ>ᫀ௃AூA᪆௃᪷Dx-tḄE᳛⊤12H02sᑁᵬᱥ)
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=8m,Ḅ45ᜧ$7UᦑC┯T஺6sVᵬḄ4570,ᵬᱥ),89:Ḅᨬᜧ,-4m,᪷D“fWX+YᡠZḄ“☢]”⊤45H_sX,ᱥ),89:Ḅ,-ᨬᜧ7am=6m,ᦑD┯T஺ᦑ⌱A஺3.ᱥ)ᐸK12dX+eᓄḄa-t᝞ᡠ஺ᑡᑁghijkᱥ)Ḅlmூ>ᫀ௃DூA᪆௃ᵫa-tgHᙠ0oᑁᱥ)ᒴK1,pEḄ;ᙠlrTᑁK1270,ᱥ)ᒴ1,MstLrYḄ;ᙠT27ᑁK12Rᔣᱥ)ᒴ#1Xu127UᵫgH,D,AஹBஹC┯T;ᦑ⌱D஺4.v⌱mwᱥ)
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25~Ḅ,ᑖ70.5m/s-1s,ᵫkgH()-f/(m,s-1)0.5t/s-i"o\---------------'A.ᱥ)ᒴK1ḄK12ᜧ$71m/s2B.ᱥ)ᒴe1C.ᱥ)ḄJ12ᜧ$70.5m/sD.ᱥ)ḄJ12ᜧ$71m/sூ>ᫀ௃ABCூA᪆௃ᵫ⚪g*tḄᐵ7(0&+0.5)m/s,ᵫᒴe1Ḅ45-X+gJ127v=o,5m/s,|«=0.5m/s2,ᑣᱥ)ḄK127a=\m/s2,0gHᱥ)ᒴK1ᦑAஹBஹC,D┯T஺ᦑ⌱AஹBஹCo5.(v⌱)aஹb':ᙠ~Ḅ45-X+᝞ᡠ:ḄK12ᜧ$70.1m/sz,'3ᑗLᙶ᪗7(5s,-2.7m)Ḅ:ᑣ()K|x/m.A-2.7B./=5sX,“ஹ6':Ḅ12ᙳ7-0.54m/sC.b:ḄJ12-1.1m/sD.xo71.55mூ>ᫀ௃CDூA᪆௃ᵫ⚪H,$hᙳᦑA┯T;'3ᑗLᙶ᪗7(5s,-2.7m)Ḅ:ᦑᙠᱏ5sXu':123aWE᳛3aᓽv=(m/s=-0.6m/s,ᦑB┯T;ᵫ⚪Hᒴ#1Ḅb:K12ᜧ$70.1m/s?,᪷DᨵV=PO+MAvo=-l.lm/s,ᦑC;Lb:5sᑁᨵ:ᡝ/=¥X5m=425m,ᦑb:89Ḅ4-ᙶ᪗¡:Ḅ,-xo=|x|-2.7m=1.55m,ᦑD஺ᦑ⌱CஹD஺6.(v⌱)¢£¤xETC¥1¦§ᐭXy©X,K1§ᐭ¥1ª«⍝Ḅ®g¯ᡂᒴK1,ᐸsᙳ12±dX+feᓄᐵ᝞ᡠ஺²H³´,-71kmjo§ᐭ¥1ª«⍝ḄXu☢Ḅ()

26B./=10sXḄ1278m/sCOr20sᑁḄ45160mDJ=1OOSOூ>ᫀ௃BCூA᪆௃ᵫ⚪H°FX+ᑁḄsᙳ1215ᔣs,ᡠ»¼s½s,D┯T;ᵫ¾¿=%+Â஻,ὶgHv()=5m/s,a=0.3m/s2,A┯T;r=10sXḄ127v=vo+«r=(54-O.3x]0)m/s=8m/s,BÅ45X=M)È᜛Ἕ=(5x20+|x0.3x2CP)m=160m,C஺7.ᙠូÌᜩÎhÏ2ÐÑᵬஹ'£¤ᙠᩩsḄᓫt⍝~ᵬᙠஹᙠ"ᔣtÔ.ÖXu'¤×ØÙᑮᨵÛᦑ9ÜḄÝÞßXyᑷ¤'¤ᑷ¤"Ḅ¦á᝞ᡠᑡḄ()o244()48//SA.ᵬ¤ḄK12ᜧL¤ḄK12B.âf=24sX'¤ã9ÜäåᑣkX'¤3,ᨬæC.7çè'¤9Üäåyᑷ¤X'¤Ḅ+,±é748mD.â'¤9Üäåᑣghᙠyᑷ¤24s»"ḄÖXu9ÜḄூ>ᫀ௃CூA᪆௃ᵬ¤ḄK12ᜧ$«|=|^|=||m/s2=1m/s2¤ḄK12ᜧ$“2=í=ᾓm/s2=1m/s2ᡠ»ᵬ¤ḄK12$L¤ḄK12ᦑA┯Tï/=24sX'¤123ayXᵬᙠஹᙠ"ᔣtÔᡠ»âf=24sX'¤ã9ÜäåᑣkX'¤3,ᨬðᦑB┯Tï6+80r24sᑁᵬ¤Ḅ45x\=-2~x24m=288m…*…20+8¤Ḅ45X2=~~x24m=336m

27'ὅ45*òAr=X2—ᓽ=48mᡠ»7çè'¤9Üäåyᑷ¤X'¤Ḅ+,±é748m,ᦑCï/=24sX'¤123aâ'¤123aXýᨵ3åᑣ123a"ᵬ¤Ḅ12¤Ḅᜧ'¤þgh3åᦑD┯T.8.ÿ“
”ḄᙢḄ⍝!⍝"#$ᐰ.'()*+,⍝(ᔣᒴ/0Ḅ1,23,ᐸ5ᜧ7ᑖ9:M=40m/s>v=25m/s,1,ᙠI3,JKL=22mMNOᨵ3,QM1,Rᓽᑷ2,UVᐸW!1,⌕YZx=160mN^_`ᩭ.b,ᙳde:fg.U1,ᑷ,M3,h5iᒴ/0jᶍlmMn#Zopᑖ᪆b,rᔲtuv.ூxᫀ௃{|᪆ூ᪆௃}1~}1,ᑷ,Zᨵ02=2a|X|1,ᑷ,ZḄ5ᜧ7«i=5m/s21,ᑷ,YZMnMb,5uᨵVi-aito=V2,|=3sQMnᑁ1,/0ḄJK:x\=v\t—^a\t-?0|=97.5m3,/0ḄJK:A-2=V2A,|M=75m:X|_.V2=22.5m>xo=22m,ᦑb,tuv.}2~ᦪ}Ꮇb,ᙠM¡uvᵫ|}1£b,uvMxJ=X2'+x§ᓽV")%1ª=V2?+xo᦮ᳮ|¯)15H"22=0±r)²ᐵ´MnfḄ)ᐗ·¸A=§-152—4x|x22=5>0,º»¼ᨵ½ᦪ|ᓽb,tuv.}3:¿À}Áb,ÂÃḄv-t¿À¿Ä▢☢ÇAr⊤Êb,5uMḄËÌÍᵫ¿d£Ax=gx3xl5m=22.5m>22m,º»b,tuv.

28ᗎm.L)25Ᏺஹ——3,0ߟi-----8^s9.)ØÙÚḄÛ,_ᙠÜÝÛᕒOWßÜ10m/sḄ5ᒴ/0Ḅ3,àáMâãäåæYZ5.5sçÛ,OÃᩭè2.5m/s2Ḅ5éᒴÂÃêÛ,Ḅ/05Lëìᑴᙠ90km/hᑁ.ð~(1)Û,ᙠåæ3,ḄZÄb,nḄᨬᜧJKó(2)Û,OÃç⌕ôMnN^å3,.ூxᫀ௃(1)75m(2)12sூ|᪆௃(1)Ýb,5uMõöḄJKᨬᜧÛ,OÃçYZhMnb,Ḅ5u.lvi10ᑣ1n~"=£=Is=4sx^=vi(/o+/i)=10x(5.5+4)m=95mx¥=ó4/|2=óX2.5X42m=20mᡠb,nḄᨬᜧJKAx=x3—x$=75m(2)Û,üᑮᨬᜧ5u=90km/h=25m/sᡠᵨḄ
:v=£=10s
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P]☟_`ED2m/s2Ḅ:/0;a.(1)bP`E3scḄd
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PnoᓽᑷrPD4m/szḄ:/02ᒴu/Ov45ᑣ789wN
xyz{⍗}(6P~D]Xᐰ89{)ூᫀ௃(1)6m/s(2)20s225m(3)20s

29ூ᪆௃(1)P3scḄ/0=஻"I=2X3m/s=6m/s.ফ68
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/3=~=Vs=5sCl]zᨬk{%A5=VO^+2OOm5=(10x5+200-1x2x52)m=225m.(3)Ꮇ678t4
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